Uni-Rez 2641 Polyamide Arizona Chemical Polyamide ADHESIVE >> Hot-melt A tough, flexible polyamide resin based on dimer acids. Recommended for bonding plastics (including plasticized PVC) and pre-heated metals. Tough, flexible polyamide resin based on dimer acids. Recommended for bonding plastics (including plasticized PVC) and pre-heated metals.